Investments in Unconsolidated Entities - Unconsolidated Entities (Details) - USD ($)	12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2018
Equity Method Investments and Joint Ventures [Abstract]
Investment in unconsolidated entities	$ 4,003,000	$ 3,962,000
Total equity of unconsolidated entities	7,079,000	9,969,000
Total outstanding borrowings of unconsolidated entities	8,807,000	12,658,000
Equity in income of unconsolidated entities	347,000	404,000	$ 375,000
Impairment of unconsolidated entity investment	0	0	(341,000)
Income (Loss) from Equity Method Investments	$ 347,000	$ 404,000	$ 34,000